US PATENT SUBCLASS 313 / 402
.~ Shadow mask, support or shield

Current as of: June, 1999
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313 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES

364  DF  CATHODE RAY TUBE {11}
402.~ Shadow mask, support or shield {4}
403  DF  .~.~> Non-circular aperture
404  DF  .~.~> With resilient support {2}
407  DF  .~.~> With frame
408  DF  .~.~> With screen

DEFINITION

Classification: 313/402

(under subclass 364) Subject matter including an electrode having apertures, correlated with groups of color emissive elements of display screen, structure securing the electrode, or electrode frame; or an electron shield associated with the electrode or frame.

(1) Note. The nominal recitation of a supported or unsupported shadow mask is not sufficient for classification in this subclass.